diff --git a/styles.css b/styles.css
index 04e4c74..30d844c 100644
--- a/styles.css
+++ b/styles.css
@@ -583,7 +583,7 @@ button:focus{outline:none}
 /* Solid opaque floor so no frame can ever be transparent to content below */
 .np-overlay::before{
   content:'';position:absolute;inset:0;
-  background:var(--bg);z-index:-1;
+  background:inherit;z-index:-1;
   transform:translateZ(0);
   pointer-events:none;
 }